Bug Kernel Fedora 32 with Navi 10 Patch

[Maurizio M]

I don't know how to give you more information on this thing, the problem 
was found also on void linux and a developer has solved it and says he 
has made it available to everyone but it must be the various Kernel 
manufacturers that must apply it. I can't tell you anything else, your 
Kernel developers should do a test with Navi 10 and see the problem in 
my opinion otherwise we will never get to grips with it if they don't do 
field tests. I can only tell you that to date 5.6.13 with Navi 10 
enabled by the Xorg file it does not work and you have to restart with 
another Kernel that contains the patch and that has no operating bug ...

I can post you what he wrote in a forum about the resolution of the 
problem and the link he posted together with the message:

I made the fix, and submitted it to the kernel. AMD then accepted and 
merged it. Void Linux ships the fix ahead of time (included in 5.6.8 
there) but other distros are free to pick it up if they want to. Or 
eventually, it'll appear in some 5.6 bugfix release, I don't know which.
Logged
https://voidlinux-ppc.org https://voidlinux-ppc.org/

[Laurent Vivier]

Le 21/05/2020 à 14:40, Maurizio M a écrit :
> I made the fix, and submitted it to the kernel. AMD then accepted and
> merged it. Void Linux ships the fix ahead of time (included in 5.6.8
> there) but other distros are free to pick it up if they want to. Or
> eventually, it'll appear in some 5.6 bugfix release, I don't know which.

According to;

https://forums.raptorcs.com/index.php/topic,100.msg915.html#msg915

Seems to be:

https://lists.freedesktop.org/archives/amd-gfx/2020-April/049082.html

it has been merged upstream in kernel v5.7-rc5:

59dfb0c64d38 ("drm/amd/display: work around fp code being emitted
outside of DC_FP_START/END")

Thanks,
Laurent

[Laurent Vivier]

Le 21/05/2020 à 15:57, Laurent Vivier a écrit :
> Le 21/05/2020 à 14:40, Maurizio M a écrit :
> > I made the fix, and submitted it to the kernel. AMD then accepted and
> > merged it. Void Linux ships the fix ahead of time (included in 5.6.8
> > there) but other distros are free to pick it up if they want to. Or
> > eventually, it'll appear in some 5.6 bugfix release, I don't know which.
>
> According to;
>
> https://forums.raptorcs.com/index.php/topic,100.msg915.html#msg915
>
> Seems to be:
>
> https://lists.freedesktop.org/archives/amd-gfx/2020-April/049082.html
>
> it has been merged upstream in kernel v5.7-rc5:
>
> 59dfb0c64d38 ("drm/amd/display: work around fp code being emitted
> outside of DC_FP_START/END")

And in linux stable v5.6.13:

6f0d234dad15 ("drm/amd/display: work around fp code being emitted
outside of DC_FP_START/END")

Thanks,
LAurent

[Dan Horák]

On Thu, 21 May 2020 16:07:59 +0200
Laurent Vivier  wrote:
> Le 21/05/2020 à 15:57, Laurent Vivier a écrit :
> > Le 21/05/2020 à 14:40, Maurizio M a écrit :
> > > I made the fix, and submitted it to the kernel. AMD then accepted
> > > and merged it. Void Linux ships the fix ahead of time (included in
> > > 5.6.8 there) but other distros are free to pick it up if they want
> > > to. Or eventually, it'll appear in some 5.6 bugfix release, I
> > > don't know which.
> >
> > According to;
> >
> > https://forums.raptorcs.com/index.php/topic,100.msg915.html#msg915
> >
> > Seems to be:
> >
> > https://lists.freedesktop.org/archives/amd-gfx/2020-April/049082.html
> >
> > it has been merged upstream in kernel v5.7-rc5:
> >
> > 59dfb0c64d38 ("drm/amd/display: work around fp code being emitted
> > outside of DC_FP_START/END")
>
> And in linux stable v5.6.13:
>
> 6f0d234dad15 ("drm/amd/display: work around fp code being emitted
> outside of DC_FP_START/END")

and the Void Linux guy confirmed to me a while ago it works OK in the
mainline 5.6.13. So Maurizio must have some other issue as well and we
need more information.

https://wiki.raptorcs.com/wiki/Enabling_Navi_10_On_Fedora_31 says the
fast-reboot feature must be disabled, because the cards can't
reinitialize with a different firmware version.

Maurizio, what hardware do you use? Talos, Blackbird, ...? Do you use
the AMD card for the skiroot environment (to control petitboot)? Do you
have a firmware loaded in BOOTKERNFW partition in the PNOR flash
(https://wiki.raptorcs.com/wiki/Add_GPU_Firmware_To_BOOTKERNFW)? What
symptoms do have (kernel crash, no output at all, ...)?

Dan